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United States Patent | 6,228,169 |
Wallace | May 8, 2001 |
A method and apparatus for applying coatings to a portion of the internal bore or threads of a fastener or similar article having an opening on at least one end is provided. A 360.degree. coating with material is provided using centrifugal force to assist in direction the material to a desired surface, which does not require use of a pressurized air stream in order to propell the coating material toward the walls of the article desired to be coated.
Inventors: | Wallace; John S. (Bloomfield, MI) |
Assignee: | ND Industries, Inc. (Clawson, MI) |
Appl. No.: | 313365 |
Filed: | May 18, 1999 |
Current U.S. Class: | 118/308; 118/300; 411/436; 411/903; 411/908 |
Intern'l Class: | B05B 007/00; B05C 005/00; F16B 037/16 |
Field of Search: | 118/300,308 411/302,303,304,902,903,908,436 |
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5090355 | Feb., 1992 | DiMaro et al. | |
5221170 | Jun., 1993 | Duffy et al. |